#8968 closed defect (wontfix)
magma.Resultant() gives error
Reported by: | mariah | Owned by: | was |
---|---|---|---|
Priority: | minor | Milestone: | sage-duplicate/invalid/wontfix |
Component: | interfaces | Keywords: | |
Cc: | Merged in: | ||
Authors: | Mariah Lenox | Reviewers: | |
Report Upstream: | N/A | Work issues: | |
Branch: | Commit: | ||
Dependencies: | Stopgaps: |
Description
eno% ./sage ---------------------------------------------------------------------- | Sage Version 4.4.1, Release Date: 2010-05-02 | | Type notebook() for the GUI, and license() for information. | ---------------------------------------------------------------------- sage: poly0 = x^2 + x + 1 sage: poly1 = x^3 + x + 1 sage: p0 = magma(poly0) sage: p1 = magma(poly1) sage: magma.Resultant(p0,p1) --------------------------------------------------------------------------- TypeError Traceback (most recent call last) /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/<ipython console> in <module>() /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/magma.pyc in __call__(self, *args, **kwds) 1745 list(args), 1746 params = kwds, -> 1747 nvals = nvals) 1748 def _sage_doc_(self): 1749 """ /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/magma.pyc in function_call(self, function, args, params, nvals) 1103 fun = "%s(%s%s)"%(function, ",".join([s.name() for s in args]), par) 1104 -> 1105 return self._do_call(fun, nvals) 1106 1107 def _do_call(self, code, nvals): /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/magma.pyc in _do_call(self, code, nvals) 1153 ans = None 1154 elif nvals == 1: -> 1155 return self(code) 1156 else: 1157 v = [self._next_var_name() for _ in range(nvals)] /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/magma.pyc in __call__(self, x, gens) 735 pass 736 --> 737 A = Expect.__call__(self, x) 738 if has_cache: 739 x._magma_cache[self] = A /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/expect.pyc in __call__(self, x, name) 1030 1031 if isinstance(x, basestring): -> 1032 return cls(self, x, name=name) 1033 try: 1034 return self._coerce_from_special_method(x) /home/mariah/sage/sage-4.4.1-x86_64-Linux-core2-fc/local/lib/python2.6/site-packages/sage/interfaces/expect.pyc in __init__(self, parent, value, is_name, name) 1449 except (TypeError, KeyboardInterrupt, RuntimeError, ValueError), x: 1450 self._session_number = -1 -> 1451 raise TypeError, x 1452 self._session_number = parent._session_number 1453 TypeError: Error evaluating Magma code. IN:_sage_[3]:=Resultant(_sage_[1],_sage_[2]); OUT: >> _sage_[3]:=Resultant(_sage_[1],_sage_[2]); ^ Runtime error in 'Resultant': Bad argument types Argument types given: MonStgElt, MonStgElt sage:
Change History (2)
comment:1 Changed 11 years ago by
- Milestone set to sage-4.4.3
- Resolution set to wontfix
- Status changed from new to closed
comment:2 Changed 11 years ago by
- Milestone changed from sage-4.4.3 to sage-duplicate/invalid/wontfix
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You have to do
R.<x> = QQ[]
first, which is the analogue of Magma'sR<x> := PolynomialRing(RationalField());
. Otherwise, x is merely a formal symbolic variable (in the sense of Sage's maple-like symbolic calculus package), and since Magma has no functionality for working with symbolic expressions, it just turns symbolic expressions into strings in Magma. So here's the way to do the computation you want: